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/*
* Copyright (C) 2019 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.systemui.dagger;
import android.app.Activity;
import android.app.Service;
import android.content.BroadcastReceiver;
import com.android.systemui.SystemUI;
import com.android.systemui.recents.RecentsImplementation;
import java.util.Map;
import javax.inject.Inject;
import javax.inject.Provider;
/**
* Used during Service and Activity instantiation to make them injectable.
*/
@SysUISingleton
public class ContextComponentResolver implements ContextComponentHelper {
private final Map<Class<?>, Provider<Activity>> mActivityCreators;
private final Map<Class<?>, Provider<Service>> mServiceCreators;
private final Map<Class<?>, Provider<SystemUI>> mSystemUICreators;
private final Map<Class<?>, Provider<RecentsImplementation>> mRecentsCreators;
private final Map<Class<?>, Provider<BroadcastReceiver>> mBroadcastReceiverCreators;
@Inject
ContextComponentResolver(Map<Class<?>, Provider<Activity>> activityCreators,
Map<Class<?>, Provider<Service>> serviceCreators,
Map<Class<?>, Provider<SystemUI>> systemUICreators,
Map<Class<?>, Provider<RecentsImplementation>> recentsCreators,
Map<Class<?>, Provider<BroadcastReceiver>> broadcastReceiverCreators) {
mActivityCreators = activityCreators;
mServiceCreators = serviceCreators;
mSystemUICreators = systemUICreators;
mRecentsCreators = recentsCreators;
mBroadcastReceiverCreators = broadcastReceiverCreators;
}
/**
* Looks up the Activity class name to see if Dagger has an instance of it.
*/
@Override
public Activity resolveActivity(String className) {
return resolve(className, mActivityCreators);
}
/**
* Looks up the BroadcastReceiver class name to see if Dagger has an instance of it.
*/
@Override
public BroadcastReceiver resolveBroadcastReceiver(String className) {
return resolve(className, mBroadcastReceiverCreators);
}
/**
* Looks up the RecentsImplementation class name to see if Dagger has an instance of it.
*/
@Override
public RecentsImplementation resolveRecents(String className) {
return resolve(className, mRecentsCreators);
}
/**
* Looks up the Service class name to see if Dagger has an instance of it.
*/
@Override
public Service resolveService(String className) {
return resolve(className, mServiceCreators);
}
/**
* Looks up the SystemUI class name to see if Dagger has an instance of it.
*/
@Override
public SystemUI resolveSystemUI(String className) {
return resolve(className, mSystemUICreators);
}
private <T> T resolve(String className, Map<Class<?>, Provider<T>> creators) {
try {
Class<?> clazz = Class.forName(className);
Provider<T> provider = creators.get(clazz);
return provider == null ? null : provider.get();
} catch (ClassNotFoundException e) {
return null;
}
}
}
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